Profit Margin Calculator

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Calculate profit margin and markup from cost and selling price.

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Frequently asked questions

What's actually different between margin and markup?

Both use the same profit (selling price minus cost), but margin divides it by the selling price while markup divides it by the cost price — same profit, different denominator, so the two percentages are never equal unless profit is zero.

What happens if I enter a cost or selling price of zero?

Whichever percentage would need to divide by that zero shows a dash instead of a number or an error, since dividing by zero isn't meaningful there.

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